Get heimdall since you're on a Mac you can find it and instructions on cyanogenmod wiki
Nice, hope you got it all fixed
Follow this guide, http://rootzwiki.com/topic/29256-tutorial-rootrecoverybootloader-unlockicsjb-verizon-galaxy-s-iii/
It has how to get back to...
Sounds like a bad download
Sounds like a rogue app
I'm still rocking AOKP build 5, and I switch up to liquid smooth every few days Lol. Just waiting on the reboots to end on the 3.4 kernel Lol
I had that happen, have you tried a reboot or clearing the cache in the messaging app
It could be an app, try a reboot also, Look and see under battery use
I never have what's happening?
Deviant xone on my s3 is awesome, been very stable even on the 3.4 kernel, liquid smooth has been good too
You can try flashing the stock software again
Your in use profile shouldn't need to be +12.5, should be 0
Freezing and crashing means you need to up your voltage
Look on xda, it's alpha though, the d1 is under legacy devices
Really it's up to the phone, start at -25 and work your way up to maybe if your phone can do it -75. Mine can't go that low
Download cm7.2 or steel droid
Here is his kernel, http://forum.xda-developers.com/showthread.php?t=2074329
U can try fauxclock and his kernels are great too
What was your last phone?
Galaxy s3 is awesome good ROMs too
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